/Engine/Source/Runtime/GeometryCore/Public/Implicit/ImplicitFunctions.h
This class converts the interval [-falloff,falloff] to [0,1], Then applies Wyvill falloff function (1-t^2)^3. The result is a skeletal-primitive-like shape with the distance=0 isocontour lying just before midway in the range (at the .ZeroIsocontour constant)
template<typename InputBoundedImplicitType, typename RealType> struct TDistanceFieldToSkeletalField
InputBoundedImp...
DistanceField
RealType
FalloffDistance